Valve



Patented Dec. I3, |898. L. ALDRICH.

VALVE.

(Application Bled Dec. 22, 1897.)

`2 sheets-Sheet (No Model.)

W tnesses.

Attorney.

'me Norms mm an. momvu'mo.. wAsmNn'roN. u. c.

P H. W. Dn D L A L.

V A L V E.

(Application filed Dec. 22, 1897.)

2 Sheets-Sheet 2.

l mr' (No Model.)

Attorney.

, UNITED STATESv *PATENT OFFICE.

LORIN ALDRICII, OF INDIAN ORCHARD, MASSACHUSETTS.

VA LV E sPncIFlcA'rIN forming par'. of Letters Patent No. 615,778, datedDecember 1e, 189s. Application filed December 22, 1897. Serial No.663,043. (No model.)

' To all whom t may concern:

Be it known that I, LORIN ALDRICH, a citizen of the United States,residing at Indian Orchard, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inValves; and I do hereby declare the following to be a full, clear, andexact description of the invention, such y as will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to Valves for use in connection with conduits forgas under high temperatures 5 and it has for its object to provide agate-valve for this purpose having improved means for securing acirculation of water through the gate or plug and through thevalve-seats to prevent undue heating of said parts by the gas.`

To this end my invention consists in the gate-valve providedy with watercirculating means, as hereinafter fully set forth.

Referring to the drawings, in which like numerals designate like partsin the several views, Figure l is a sideview of a gate-valve embodyingthe invention, the valve being of the class known as rising-spindlevalves. Fig. 2 is a vertical section thereof, taken at line c c ofFig. 1. Fig. 3 is a cross-section of the spindle, taken at line :n a: ofFig. 2. Fig. 4 is a side view of a gate-valve embodying aslightly-modified form of the invention, the valve in this instancebeing of the class known as stationary-spindle7 valves. Fig. 5 is avertical section thereof, taken at line y y of Fig. 4. Fig. 6 is across-section of the spindle, taken at linee' .s of Fig. 5. Fig 7 is asimilar cross-section of the spindle, showing another way of arrangingthe water-pipes therein. Fig. 8 is a detail View of one of thecoupl-ings through which water is conducted to the seats on thevalve-body.

Referring to Figs. 1, 2, and 3, the numeral l designates the body; 2,the gate or plug; 3, the gate-operating spindle; 4, the yoke secured tothe body, and 5 the hand-wheel, swiveled on said yoke and having atapped hub to engage the threaded spindle of a common form ofgate-valve, it being understood that revolution of said hand-wheel inone direction will open the valve, the spindle 3 rising through thehubthereof, and vice versa. In the use of this form of valve inconnection with gas under a high degree of temperature it is necessaryto employ means for exerting a cooling action upon parts of the valve,as otherwise the action of the heat upon the metal would soon render thevalve useless to prevent escape of the gas, and in the practice of myinvention I provide for a circulation of' water through the valve-seatsand also through the gate and its operating-spindle, las will be nowdescribed. The annular'valve-seats 6 6,which in this instance have theiracting face tapered to correspond with the tapered or inclined faces ofthe gate 2, are each provided with an annular water-passage 7, coredtherein in the process of casting thevalve-body, said passages eachterminating at one end in an inletpassage S and at the opposite end inan outletpassage 9, also cored in the body and leading to the exteriorof the latter,as shown by broken lines in Fig. 1. A water-inlet pipe 10,leading from a source of Water-supply, communicates with theinlet-passages 8 of the two seats by means of a twin coupling 12, and anescapepipe 13 communicates, by means of a similar coupling 14, with theoutlet-passages 9 of said seats. By means of said passages andcommunicating pipes provision is made for a constant circulation ofwater around the valveseats in such manner as to prevent any undueheating thereof by the hot gas. Preferably the inlet-pipe andinlet-passages are of a slightly-greater diameter than the outlet-pipeand outlet-passages, as shown, thereby insuring that the annularpassages in the seats are keptfull of water.

By coring the passages 7, S, and 9 in the metal composing the valve bodyand seats, as described, the cost of manufacture of the 'valve is butslightly increased and the formation of blow-holes or other defects inthe casting to permit the escape of the gas is avoided.

The spindle 3 is connected to the gate or plug 2 at' its lower end inthe usual manner, and at its upper end it passes through the hub ofhand-wheel 5, from which it receives its movement. Within said spindleis located vthe water-inlet pipe 15, which extends downwardly throughthe spindle into the hollow gate 2 nearly to the bottom of the latter.At

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their upper ends both the spindle and said inlet-pipe 15 are screwedinto the coupling-head 16, whereby they are caused to move in unison. Abent pipe 17, entering said coupling-head 1G and forming a continuationof said inletpipe 15, has connected to its opposite end a ilexible pipe18, leading to a main supply-pipe or other source of water-supply, and aflexible pipe 19, leading from said coupling-head, has opencommunication through the latter With the interior of spindle 3. Saidlexible pipes permit the spindle and pipe 15 to rise and fall with thegate Withoutinterrupting their connection therewith,and the water-supply passes through pipes 18, 17, and 15 to the gate 2, and from thenceupwardly through spindle 3, around the pipe 15, to and through thecoupling-head, and passes off through pipe 19. I thus provide for aconstant circulation of water through the gate and through itsoperating-spindle in such manner as to eiiectually prevent any undueheating of said parts. Such cooling action upon the spindle, moreover,insures proper Working action thereof through the stuffing-box packingat the top of the valve-body at all times and prevents itslubricating-oil from drying up and causing the spindle to Work hard atthe point where its thread engages the tapped hub of the handwheel. Easyand perfect workin g of the valve is thus secured under allcircumstances.

In Figs. 4, 5, and G I have illustrated the application of the inventionto a stationaryspindle valve, in which the spindle 2O has a revolvingmovement simply, and the gate 21 travels up and down thereon by means ofits thread and a nut 22 on the gate. The means for securing acirculation of Water through the seats on the Valve-body are the same asin the form first described; but in securing such circulation throughthe gate and its spindle I employ two pipes Within the spindle-to Wit,an outlet-pipe 23 and an inlet-pipe 24, located Within saidoutlet-pipe-both of which pipes are connected at their upper ends to acoupling-head 25, similar to the one first described. The gate 21 isprovided with cored channels or passages 26, extending around the areaof its side Walls, which channels or passages are connected at one endat the bottom of the gate with an inlet-passage 27 and at their oppositeend With an outlet-passage 28, as shown. The inlet-pipe 24 communicatesat its lower end with said inlet-passage 27 and the outlet-pipe 23communicates similarly with said outletpassage 28. Said inlet and outletpipes rise and fall with the gate, having a telescopic action Within thespindle, and to provide for such movement they may communicate at theirupper ends through the coupling-head with flexible pipes, as beforedescribed. I have, however, shown another form of means for securing thesame result in connection with this form of the invention, in which asupplypipe 29 is placed in open communication with the inlet-pipe 24through the coupling-head by means of tWo jointed pipe-sections 30 31,

and a Waste-pipe 32 :is similarly placed in open communication with theoutlet-pipe 23 by means of two jointed pipe-sections 33 34. Said jointedpipe-sections permit the free rise and fall of said inlet and outletpipes, and the Water from the supply-pipe passes through the sections 3031 to and through the inlet pipe 24 to the inlet-passage 27, thencethrough the channels 2G to the outlet-passage 28,then ce through theoutlet-pipe 23 and around the inlet-pipe to the pipe-sections 33 34, andthence through the waste-pipe 32. A constant eirculation of Water isthus secured through the gate and its spindle.

In Fig. 7 I have illustrated the spindle 2O as having an inlet-pipe 35and outlet-pipe 3G arranged side by side therein for conducting water toand from the gate; butI prefer the before-described arrangement of saidpipes, as being more compact.

It Will be understood that in applying my invention to valves havinggates with but a single face and having but a single seat on thevalvebody the twin couplings 12 14 Will not be required, the inlet-pipe10 and escapepipe 13 in such case communicating directly With the singlepassage 7 of the body.

By the use of the Water-circulating means herein shown and described thetime during which a valve can be used in connection with gas under ahigh degree of temperature without danger of leaking is greatlyprolonged and ease of operation of the valve at all times is assured.

Having thus fully described my invention,-

-what I claim, and desire to secure by Letters 1. In a gatevalve,thecombination with the gate thereof provided interiorly with aWaterchannel and its tubular, operating-spindle, of a Water-inlet pipeand a Water-outlet pipe both passing longitudinally through said spindleand communicating with the channel in said gate, said inlet and outletpipes being provided at their outer ends with flexible pipe connections,substantially as and for the pur= pose described.

2. In a gate-valve,the combination With the gate and its tubularspindle, of a Water-outlet pipe extending through said spindle into saidgate,a Water-inlet pipe extending th rou gh said outlet-pipe into saidgate, and iiexible connections at the outer ends of said pipes forconducting Water to and from the same respectively, substantially asdescribed.

3. In a gatevalve,the combination with the revoluble and threadedspindle 2O and the gate 2l movably threaded upon said spindle to openand close the valve, of the pipes 23 24 located one within the other andextending through said spindle into said gate, said pipes beingconnected together at their outer ends by the coupling-head 25, andiiexible inlet and outlet pipe connections communicating with said pipesthrough said couplinghead, substantially as set forth.

4. In agate-valve,the combination with the gate and tubularspindlethereof, of conduits In testimony whereof I affix my signature 24 23located Within said spindle for oonduotin presence' of tWo Witnesses.ing Water through the same both to and lfrom Y the gate, a, Water-supplypipe 29, an eseape- LORIN ALDRICH pipe 32, and the jointed pipe-sections30 3l Vitnesses:

and 33 34 connecting said pipes to said oon- WM. H. CHAPMAN,

duits respectively,substantially as describeda HOMER D. PACKARD.

